let [a, b, c] = [1, 2, 3]

let [a, [b, c]] = [1, [2, 3]]

注意：左右兩邊結構格式要保持一致

json

let json = {name: 'cc', age: 18, job: 'coder'}
let {name, age, job} = json
console.log(name, age, job)
// 'cc', 18, 'coder'

let json = {name: 'cc', age: 18, job: 'coder'}
let {name:n, age:a, job:j} = json
console.log(n, a, j)
// 'cc', 18, 'coder'
 

解構時也可以給預設值

let [a, b, c='預設值'] = [1, 2]
console.log(a, b, c)
// 1, 2, '預設值'